33446420 has 36 divisors (see below), whose sum is σ = 81707220. Its totient is φ = 11467008.

The previous prime is 33446417. The next prime is 33446423. The reversal of 33446420 is 2464433.

It is an interprime number because it is at equal distance from previous prime (33446417) and next prime (33446423).

It can be written as a sum of positive squares in 2 ways, for example, as 7761796 + 25684624 = 2786^2 + 5068^2 .

It is a super-2 number, since 2×33446420² = 2237326021632800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33446420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33446423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16085 + ... + 18044.

It is an arithmetic number, because the mean of its divisors is an integer number (2269645).

Almost surely, 2^33446420 is an apocalyptic number.

It is an amenable number.

33446420 is an abundant number, since it is smaller than the sum of its proper divisors (48260800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33446420 is a wasteful number, since it uses less digits than its factorization.

33446420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34152 (or 34143 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 33446420 is about 5783.2879921373. The cubic root of 33446420 is about 322.1933306548.

The spelling of 33446420 in words is "thirty-three million, four hundred forty-six thousand, four hundred twenty".